leveldb_ttl

作者：韩晨旭 10225101440 李畅 10225102463

xindubawukong 87b3a371b1 remove useless code in cache.h		3 lat temu
..
c.h	Don't include C++ headers in extern C	4 lat temu
cache.h	remove useless code in cache.h	3 lat temu
comparator.h	Format all files IAW the Google C++ Style Guide.	6 lat temu
db.h	Change version to 1.23.	4 lat temu
dumpfile.h	Format all files IAW the Google C++ Style Guide.	6 lat temu
env.h	Add some std:: qualifiers to types and functions.	5 lat temu
export.h	Add CMake build support.	7 lat temu
filter_policy.h	Format all files IAW the Google C++ Style Guide.	6 lat temu
iterator.h	Correct class/structure declaration order.	6 lat temu
options.h	Switch from C headers to C++ headers.	5 lat temu
slice.h	Switch from C headers to C++ headers.	5 lat temu
status.h	Correct class/structure declaration order.	6 lat temu
table.h	Switch from C headers to C++ headers.	5 lat temu
table_builder.h	Switch from C headers to C++ headers.	5 lat temu
write_batch.h	Correct class/structure declaration order.	6 lat temu